Home / 268,255.68-402,445.83-78,708.39

Finding the Fourth Proportional to 268,255.68, 402,445.83 and 78,708.39

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Solution

The fourth proportional to 268,255.68, 402,445.83 and 78,708.39 is: 118,080.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,255.68 : 402,445.83 = 78,708.39 : x
  2. Step 2: Convert to fraction form
    268,255.68/402,445.83 = 78,708.39/x
  3. Step 3: Cross multiply
    268,255.68x = 402,445.83 × 78,708.39
  4. Step 4: Simplify right side
    268,255.68x = 31,675,861,329.28
  5. Step 5: Solve for x
    x = 31,675,861,329.28/268,255.68
  6. Step 6: Final answer
    x = 118,080.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.